Reading by touch

An original explanatory article about braille and accessible information.

Braille makes written information available through patterns of raised dots. In the familiar six-dot cell, two columns each contain three possible dot positions. Different combinations form characters which a reader can distinguish by touch. The pattern matters, not the appearance of a printed letter converted into a raised outline.

There are different ways of representing English in braille. Uncontracted braille sets out individual letters and other signs. Contracted braille also uses combinations which can stand for groups of letters or whole words. A reader who knows those conventions can read the intended language without every word requiring its full printed-letter length.

Braille is not confined to a page stored on a shelf. Paper can carry fixed raised dots, while a refreshable display produces patterns which change as its user moves through electronic text. These are different means of presenting readable information, rather than evidence that one belongs only to the past.

The existence of braille does not establish that every blind or partially sighted person reads it or wants the same format for every purpose. Print, larger print, audio and other accessible arrangements can serve different preferences and situations. Someone providing information needs to ask what will be useful instead of treating a category of people as a single reader.

What does the article explain about the ways braille can make information available?